论文标题
间隔TIO $ _2 $纳米管阵列允许高性能分层超级电容器结构
Spaced TiO$_2$ Nanotube Arrays Allow for High Performance Hierarchical Supercapacitor Structure
论文作者
论文摘要
在这项工作中，我们将硝化层次TIO $ _2 $纳米管的合成和电化学特性描述为超级电容器的电极。层次结构$ _2 $纳米结构是由自组织间隔TiO $ _2 $纳米管的受控划分的TiO2纳米颗粒装饰形成的。然后，在升高温度下将这些结构在NH $ _3 $大气中退火，以将材料转换为硝酸盐结构 - 这大大增强了其电子传输性能。可以通过更改装饰的Tio $ _2 $纳米颗粒层的数量来调整层次结构的面积电容。当通过纳米颗粒沉积的表面积最高并且通过硝化电导率优化时，层次结构的电容增强达到了最大值。
In this work we describe the synthesis and electrochemical properties of nitridated hierarchical TiO$_2$ nanotubes as an electrode for supercapacitors. The hierarchical TiO$_2$ nanostructures are formed by a controlled layer-by-layer TiO2 nanoparticle decoration on self-organized spaced TiO$_2$ nanotubes. These structures are then annealed in NH$_3$ atmosphere at elevated temperature to convert the material to a nitride structure -- this drastically enhances their electron-transport properties. The areal capacitance of hierarchical structures can be tuned by changing the number of decorated TiO$_2$ nanoparticle layers. The capacitance enhancement of the hierarchical structures reaches a maximum when the surface area through nanoparticle deposition is highest and the conductivity via nitridation is optimized.
